* {
    padding: 0;
    margin: 0;
    z-index: 10000;
}
.shell{
    width: 100%;
    position: relative;
    padding: 80px 0;
    transition: 0.3s ease 0s;
    background-attachment: fixed;
    background-size: cover;
}
.shell:before{
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(99, 99, 99, 0.8);
    content:"";
}
.header{
  width: 100%;
  text-align: center;
  margin-bottom: 80px;
  position: relative;
}
.title{
    color: #fff;
    font-size: 46px;
    font-weight: normal;
    margin: 0;
}
.timeline{
    display: flex;
    margin: 0 auto;
    flex-wrap: wrap;
    flex-direction: column;
    max-width: 700px;
    position: relative;
}
.content-title{
    font-weight: normal;
    font-size: 66px;
    margin: -10px 0 0 0;
    transition: 0.4s;
    padding: 0 10px;
    box-sizing: border-box;
    color: #fff;

}
.content-desc{
   margin: 0;
   font-size: 15px;
   box-sizing: border-box;
   color: rgba(255, 255, 255, 0.7);
   line-height: 25px;
}
.timeline:before{
    position: absolute;
    left: 50%;
    width: 2px;
    height: 100%;
    margin-left: -1px;
    content:"";
    background: rgba(255, 255, 255, 0.07);
}
.item{
    padding: 40px 0;
    opacity: 0.3;
    filter:blur(2px);
    transition: 0.5s;
    box-sizing: border-box;
    width: calc(50% - 40px);
    display: flex;
    transform: translateY(-80px);
}
.item:before{
    content:attr(data-text);
    letter-spacing: 3px;
    width: 100%;
    position: absolute;
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
    border-left:2px solid rgba(255, 255, 255, 0.5);
    top: 70%;
    margin-top: -5px;
    padding-left: 15px;
    opacity: 0;
    right:calc(-100% -56px);
    font:900 20px '';
    letter-spacing: 5px;
}
.item:nth-child(even){
    align-self: flex-end;
}
.item:nth-child(even):before{
    right: auto;
    text-align: right;
    left: calc(-100% - 56px);
    padding-left: 0;
    border-left: none;
    border-right: 2px solid rgba(255, 255, 255, 0.5);
    padding-right: 15px;
}
.item--active{
    opacity: 1;
    filter:blur(0px);
    transform: translateY(0);
}
.item--active:before{
    top: 50%;
    transition: 0.3s all 0.2s;
    opacity: 1;
}
.item--active .content-title{
    margin:-50px 0 20px 0;
}
.img{
    max-width: 100%;
    box-shadow: 0 10px 15px rgba(0,0,0,0.4);
}
.subtitle{
    color: rgba(255,255,255,0.5);
    font-size: 16px;
    letter-spacing: 5px;
    margin: 10px 0 0 0;
    font-weight: normal;
}
.footer{
    padding:95px 0;
    text-align: center;
}
.footer a{
    color: #999;
    display: inline-block;
}
@media only screen and (max-width: 767px){
    .item{
        align-self: baseline !important;
        width: 100%;
        padding: 0 30px 15px 80px;
    }
    .item:before{
        left:10px !important;
        padding: 0 !important;
        top: 50px;
        text-align: center !important;
        width: 60px;
        border: none !important;
    }
    .item:last-child{
        padding-bottom: 40px;
    }
}
@media only screen and (max-width: 767px){
    .timeline:before{
        left:40px;
    }
}